Business and IT modeling Car Rental example Alar Krist Alar Business and IT modeling Car Rental example Alar Krist Alar.Krist@Swedbank.ee 5118398

Simplified description of a car rental business The essence of the car rental business: customers rent cars We have many offices in many countries We have many cars we group cars by car types (small, medium, big) We assign rental price to each car type Customer can make bookings for car types (not for concrete cars) Customer visits an office and rents a free car or customer makes a rental agreement for a car Customer returns the car to an office Clerk creates an invoice to customer Customer pays the invoice by card or by cash

Simplified process model (BPMN diagram)

More advanced process model with events (BPMN diagram)

Use case diagram

Attribute level BIM– business decision: what detail information is needed

Sub set of a physical data model (UML class diagram)

Architecture model – UML general component diagram (sub systems and main data flows)

Architecture model – UML detail component diagram (internal components of sub systems and data flows)

Architecture model – UML deployment diagram (nodes where to deploy components)

Architecture model – UML deployment diagram (nodes and deployed components)

Architecture model – UML class diagram 1 Sub systems, its main data entities, main functionalityand data flows